Go to Settings > Security menu. Turn on 'Two-Step Verification'. A verification code will be sent to your registered phone number each time you log in.
|1. Access to an application > Click 'My Collection' on the right bottom > Access to 'Settings' on the right top|
|3. Click 'Security'|
3. Phone number verification > Activate the toggle switch (When required) Insert the verification code received in
(To deactivate) Phone number verification > Deactivate the toggle switch